Sheet cutting, collecting, and folding mechanism



' Oct. 6, 1931. c. s. CRAFTS 1,826,601

SHEET CUTTING, COLLECTING, AND FOLDING IECHANISI Filed Dec. 24. 1929 a Sheats-$heet 1 ATroRNY v Oct. '6, 1931. c. s. cRAI-"rs 1,326,601

SHEET CUTTING, COLLECTING, Md) FOLDING IBOHA IIISI I Filed Dec. 24, 1929 3 sheds-sheet '2 ATI'ORNEY I C. S. CRAFTS Oct. 6, 1931.

SHEET CUTTING, COLLECTING, AND FOLDING IECHANISI Filed Dec. 24. 1929 3 Sheets-Sheet 3 Patented Oct. 6, 1931 szasei H UNETEDQSTATES PATENT orricr.

, CURTIS S. CRAFTS, 01 OAK PARK, IZLINOIS, ASSITGNOR TD GOSS PRINTING PRESS COM- 1' PANY, A CORPORATION OE ILLINOIS SHEET CUTTING/COLLECTING, Ann nonnative irncnemsiu Application filed Ilecemb er 24, 1929. Serial No. 416,229.

The invention relates toynew and useful improvements in sheet cutting, collecting and folding mechanisms and more especially to suchv improvements as applied to fast rotary 5 printingpresses; y 1 g .Objects and advantages of the invention will beset forth in part hereinafter and in part willfbe obvious herefrom, or may be 7 learned by practice with the invention, the

1 same being realized-and attained by means p the instrumentalities and combinations pointed out in the appended claims,

The invention consists inthe novel parts, construction, arrangements, combinations and l 15. improvements herein shownand described.

The accompanyinm drawings, referred to herein-and constituting a part hereof, illustrate oneembodiment of vthe invention, and together with the description, serve to ex- 2o plainthe principles of theinvention.

Of the drawings: Y Y

I F'g. 1-isa fragmentary elevation, partlyv in section, of a mechanism embodying the invent-ioi'ntaken substantially on line 11 of 25. Fig.2;

Fig; 2 is a vertical section taken substan tially on line 2+2 of, Fig. 1; 1

Fig.3 is a fragmentary side elevation, looking at the upper partof Fig. 1 from the left Fig. l, is atransverse vertical section ihrough'the cutting, collecting and folding cylinder and the cooperating cutting cylinder, showing the opposite-end from Fig. 1, and 'taken substantially on the line H of Fig.

:5; and 7 Fig. 5 is afragmentary topplanof the mechanism shown in Fig. 4', with associated -parts. U

v =The invention is directed to providing. a

novel sheet cutting and folding mechanism having optionally usable collecting means, which is simple and 'sturdy in construction, eiiminates many "parts whichare necessary in tl e usual types ofsuch mechanism, and

7 which is .easily changedfrom collectingto n u-collectingoperationand vice versa.

The-invention further provides amechas nismof the kind described, wherein the sheets I cut from a running web may be optionally I W collected upon the folding-oil cylinder, which path through the mechanism, and this path is not changed irrespective of whether or not there is collection of the sheets cut from the running web. The cross-association of webs may besimply effected directly from either side, due to the simplicity and the position of the mechanism. )1 1 There is, further provided by my invention rotary, blade-equipped foldingmeans, wherein avsingle' blade may be utilized to efliect the folding-off of either a collected or uncollected product through regulably control ling tlie 11uinber'of actuations of the folding means in relation to the revolutions of the folding mechanism. I

Inrealizing combinedly these and other objects there are provided a combined cutting, folding, and optionally operable collecting, cylinder, with a cutting, non-collecting cylinder coacting therewith tocut off sheets from a running web fed directly to the bite of the two cylinders, the alternative collecti'ng or non-collecting being effected by regulation of the actuating means for the folding devices on the first-mentioned cylin-, der.

Meansare likewise provided for varying the impaling pin, or equivalent sheet holding and releasing, action so that theselikewise maybe very simply, easily and quickly changed, either for collecting or non-collecting operation. I

The invention in certain of its features provides an embodiment having the general characteristics stated, as well as others. wherein the folding mechanism is controlled and operated either for collecting or non-collecting by rotary actuating means. and preferably by a rotary cam having slots therein, and known the accompanying drawings, afrunning web planator but are not restrictive thereof. 1 I

as the ,Husby cam movement, alth'oughthe invention in certainof its features is not thus limited.

- I ltrwill be understood that the foregoing general description of the invention, and the following detaile d description as well, are ex- .l1eferring. now to the embodiment of invention illustrated bywaylof example in a supply is received from a suitable source, such as a fast rotary printingpress, in which casethe web supply is longitudinally folded, and

usually associated. Theweb or webs are run over a'former 1, havin pairs offorming and forwarding rollers i The sheet cutting, option'allycollecting and i I folding ofi means comprises a multi-way cylinder having" an odd number of sheetsupporting'and collecting surfaces thereon (for cooperat on with'rtheus'ual arrangement of plates-i on flthe form cylinders of printing press, that is, either two or fourriplates aroundd gsuch sheet isupport-ingfspaces being usually three in" nmnher. Theef-oldingeofi" devicesarelocated'medianly ofthe respective sheet-supporting surfaces, and a: cuttingcyl- 1nc'ler,;ceoperating with the .multi-way cylinder-to cut theisheetsfrom the running web,

is positioned preferably-on thew-horizontal axial plane with theniulti'awaycylinder. I.

Alsembodied (Figsel, 2 and 4;),Ithe multiivayicylinder-lfl is-fixed on ashaft12, which is-journaled in tlie'imachin'e side frames 13 f and 1&- The cooperating cut-ting cylinder 18 isfixedaon ashaft 19, journaIeda-tQOin the" I folder side frames 13 and 14,.fThiscylinder ofthe cylinder. iTwomale cutting'me'mbers' ZG aHdZYaref mounteddiametrically opposite is located substantially beside the collecting I cylinder, fand. .they preferably have their axes in the same horizontahplane. The; web

2,2,fiXed respectively onthe shafts 12 and 19,

cause-the two cylinders to rotate togethen As shownfihe cooperating cutting cylinder 18 has a c rcumference equal to the length of two sheets, and cuts twice forevery revolution in the c-ylinder 1'8,"and threez'female cut-ting memhers 28, 29 and 3.0 are mounted incylin- V derlO', asheet length apart circumferentially,

and cooperate. with the male-cutters to cutthe sheets from the. nning webs;

V "'l he' emhodied form of folding-off mechanis lli fliizgsw1,:2 2ind 4) comprises a rotary blade mechanism, to which is imparted a half rotation, passingthe folding-off. rollers 7 and 3L4to: fold off the sheets into the bite, of "f the folding-off rollers. A's embodied, eachof yand'eXempl'a-ry 0f the invention,

cam movement.

mediate point, before it again "approaches t these rotaryblade mechanisms comprises -a shaft 37,.1nounted at its ends in' bearings 38, formed in the ends of the cylinder 10. Each of these shafts'is'providedwith two seats 39 and 40 for folding blades 4l,but my invention contemplates the use of eitheroneor two fold ng bladesfor each fold ngmechanism,

V as embodiments of optional meansfor collecting or-non-collecting foldingsofi from cylinder l0.

I In the embodiedform of actuating and controlling means for the rotaryblade folding-off mechanismsf'when onlya single blade is used for each ofthe'folding-offdevices, one end of each' of; the shafts 37 projectsbeyond the head of cylinder 10, and fixed on the projecting end ofeacheo-f the respective shafts 37 V is a cross-arm 47, carrying at either endthereof a pair of cam rollers #18 and 4:9. These cam rollers run on the innerface ott' -a jfixed cir-'- cular cam trac r 53, mounted means of supports 54 on the side frame 14 of the machine.

The folding blade actuating device {at the foldingeoff locus comprises the rotatable, slotted cam disc 55, having'therein thecam slots X 56, 57'and58. The calndisciisintegral-with V or fixed toa gear Wheel 59, fixed to a stub shaft 60, journaled' within" a boss 61; fixed to and extending inwardlyfromthe side frame 14. The gear'w'heel 59 meshes witha broadcylihderjlO, whereby the cam and E'cylinder are' ro'tated in timed relation.jDuringfthe folding operation, tlierforemost roller 48" as it comes-to the lower gap in the cam ring'53, enters the corresponding slot 58-in the rotary cam and shaft is therebyf'givena seniirotation due to therelatwe'movement of the cylinder and cam, and the roller 4:9, which is then in the lead, again takesto and runsalcng,

' as the leader, on thecamjring; 53 as" thefolding device leaves the cam slot; In'this respect it is" the usual operationof the Husby V In accordance with one feature of the invention, control devices are provided'for the folding device, selectively movable into diffei'ent positions to causecollecting or noncollecting; operation. When a single folding I blade is used on eachof the folding-off de- I vices of the cylinder 10, means are provided for optionally impartingan additional -'se1nirotation to the folding-0E device at an'inter-j I l locus of the foldingbffrolleis, thus causing ing and to fold foff the sheets from the particular sheet supporting surface of the cylinderlO. at each passing of the folding-oit rollers. Means are likewise provided for n8 I I the folding-off device to 'operate non-collect I silencing. this additional actuating means,

to cause the single bladed fcldin'gdevice to collect before folding-Potts lVith this setting receives a semi-rotation in passing the are of the mechanism, each folding-off device ing-otl' rollers, and thus when a single blade is used, although the folding-off device always cooperates with the rotary cam 55,

there is a folding-off Operation only every second time that the mechanism. passes the edalternatively regulable rotary movement of the tolding devices' to effect either 001- leetin'g or-non-collecting operation. I In theflembodied form of said alternative 1 7 control mechanism means are provided for selectively effecting rotary movement of the folding devices at one or more polnts 1n their rotary path; As embodied, a carriage or supporting slide 73 is mountedin guideways formed in a supporting bracket 74, fixed upon the machine side frame 14. Fixed to and z 'vdownwardly projecting from the slidable support .73 is a bracket 75, the lower end of which is formed into an arcuate guidememf'ber-ZS wh1ch,-1n one position of'slide 73,

constitutes a continuation of the circular track of theicamv53, across the median gap therein, whereby the respective folding blade actuating arms with their rollers will run continuously along the circular cam guide 53 andwill be actuatedonly at the folding-oil locus. j w g In thefembodied means forimparting the extra semi-rotation to the fold ng-off devices,

another bracket or supporting plate 81 is I fixed to the slidable" support 78, and extends "s'ide-irame 14 of. the folder;

? downwardly therefrom. In the lower end of plate 81*is journaled a. shaft'83, which 'is likewise journaled in 'a bushing 84' in the Shaft 83 is both ,retat-able and; longitudinally movable in said bushingbearing'84, but is shouldered so that itflis rotatable ln 1ts support 81,

Tlie'gear wheel 85 meshes with 'thebroadcircular cam guide 53.

faced gear wheel 63. fixed on the shaft 12 of the folding cylinder 10,whereby the parts rotate in timed relationfas gear 85 always remains-in mesh with gear 63, as the cam bridge piece 76 or the rotary cam 86 are alternatively moved intoalinement with the Theembodied form and means of alternatively setting ormovingthe cam bridgepiece 76 and the rotarycam device 86-in to operative relation with the folding devices comprises a rod 91, fixed to the slidable support 7 8 and extending outwardly through an aperture in the side frame 14 of the folder. At its outer end rod'91 hasa pin and slot connection 92 with an arm 93, fixed on' a shaft 94, which is journaled in a bracket 95,

" fixed on thefolder'frame. A hand-actuable lever arm 96 is hired to the other end of the shaft 94, and is provided with a suitable looking device 97, whereby either the cam or the bridge piece may be moved to and be held in operative relation with the passing folding devices. The mechanism is thus settaole for either collecting or non-collecting 'OPGT', atlon.

The means for effecting a collecting or non-collecting movement o'l the sheet holding and releasing devices of the collecting cylinder, as embodied, comprises a series of i npaling pins 116, mounted in close proximityto the corresponding sheet-cutting device on'the cylinder 10. The pins 110 are mounted on a series of arms 111, fixed on a shaft 112, ournaled at its ends in the heads of the cylinder 10." One end 01": the shaft 112 projects outside the cylinder, and said exterior end has fixed thereon an arm 11?; carrying a cam roller 114. These rollers runin a grooved cam track 115, formed in a cam disc 116, the hub 117 of which is journaled loosely on the shaft 12 of the cylinder 10. A driving gear 123 is mounted on the hub 117 of the cam plate with a spline 124;, whereby the gear wheel 123 may be moved axially on thehubll? of the cam disc 116, but the cam disc and gear wheel rotate together. A clamping, screw 125 may be provided for holding the gear wheel in desired position on the hub. Gear wheel 123, inone of its positions, meshes with a driving gear 129 fixed on the shaft 119 of the cutting cylinder 118. lVhen the mechanism is seconnected, the cam disc 116 has a three-to-two forward rotation relatively to the cylinder 10, and thereby the respective impaling pins will be actuatedonly every second time "hat theypass the toldingpfi' position.

To effect consecutive actuation of the inipaling pins for each rotation of the cylinder 10 cam disc 116 is held stationary. The gear wheel 123 is slipped from full line to broken line position in Fig. 5, and thus passes out of mesh with its driving gear 129, and passes into mesh with the teeth of a holding detent member- 130, and thereby the cam plate 116 is held stationary, and the iinpalingpins are retracted on each rotation of the folding-oil cylinder 10.

If desired alternative folding-oil action may be effected by taking on and off a second folding blade for each of the folding devices' In such case, the cam track of the set-table device. will be kept in alinement with the guiding cam ring for the folding actuating devices. t is much speedier and smplcr to use the settable device, as the mere shifting of the hand lever changes all the folding devices and the entire folder from coll cting to non-collecting and vice versa. The manner or" operation of the foregoing described mechanism will be clearly unden meansfor causing the'foldingdevice to coa restated here. I 1

Theinvention 111- its broader aspects 13 not limitedtothe specific-mechanismsshown and described but departures ay be madetheretroin ,W1tl1ll1 the scope ofthe accompanying {clainisjvithout departing from theprincn' ples'of the invention and without sacrificing its chief-advantages; i

' 1. A sheet j collecting and folding" mechatime including; in combination e multi-Way collecting cylinder, a"fo l'cl1ng, dev ce mounted on said "cylinder, folding' -ofi rollers, and

act with the folding-oflrollers on every pesy ing of the folding-off rollers or only. on plurality of said passings." V I r 7 A sheet collecting andfolding in'echa- -.nis1n including in combination a inulti-wey collectinggcylindeigefolding; device h aving e i ein including in 1 combinationa niu 1"'olding blade mounted on said cylinder, folding-off; rollers-,land means for causing the folding device to 'comt; Withthe "folding-off rollers on every" pessin of the; foldingofi :A sheet collecting and "folding f collecting; cylinder, fa foldingdevicc on Said cylinder, folding otE rollers and means oper-o able toceuse the folding device to coect With the folding-off rollers-on every nessing of the 'ing' operation.

1 .foldingofi rollers,andeiportion-of seidnieansgbeing optionally displaceeble'; to cause; the

folding device tofcoect with the folding ofi rollersconly on a plurality of said .passing's 4 A sheet collecting; find foldinglmecha nisin including in coinbinetion {Lill'lllld WfiY collecting cylinder,;e folding device h *a folding blade mounted on said'cylinder,

folding-cit rollers, and 'a pair 'ofineene :one

t ing of Whichis o erab le'bven attendant to cause he folding: blade to fold oii' on every heissing ofthe foldingoif rollers ity oflsaid pessin'gs;

mam including in combination :1- iniultiay and {means for causing the folding device to ooact With toe folding-oil rollers on e'ver v ioldin'g ofl; rollersfonly, on afplurahty of said;

nism including-in coinbir nee the folding 'deviceto coect with the collecting cylinder," 3 rote; i

one of Which'is opionelly opereblefor cats in -1 the foiding devi'ce to coact with the folding-off rollere oneverypassing of the fold-i nisin including in, combinatione collecting cylinder, a foldingdevice mounted (l pessing's; 4 w Way:

nisni including in combination .a niulti V collecting cylinder, 7 rotary fold ng de ce mounted on the COllClZlIig cylinde 1', fold ngor only on no plumlc.v A fs'heet ollecting end folding mechzn pegsi'no; of the folding-off rollers, e portion i d ,ineans being optionally displaceable 7. A sheet collectingend fold ng niechw.

on said cylinder, folding off -rollers, end means forceusing the folding device to coact With the folding-oft rollers on every pasingof the folding-off rollers-or only on ra'plurality of seidipessinggrsa d neens including a control mechanism for; the folding device selectively movable into diifer'e'nt posltio'nsto cause collecting Y or nonrcolle'cting" operation inulti-Way in mfi 1 9118296 113;, O l a lit f i i I pesslngs; r

-; 8. l lisheet collecting and toidirig ineclie- .iisin including in combination e 'rnulti-Wey collecting cylinder, e roteryafolding device having awfolding blade mounted on said cylim I der, foldingmffi rollers, and means forfcausdevice to coact with the foldingf-oti' rollers on every passing of the' iold-r ing'the folding ing-ofi'rollers or onlypn e plnrztlity of seid pessings," said means including a vcontrol mechanism for the folding devicerg lectively movebleinto different positions tocauee col looting ornon-collectingoperation.,1,

.9, Asheet collecting and folding oi -Q rollers, and means for effecting elite 7 tively, regulable rot ary niovenient ofth ingdev ce to efiectcolleotingor no 10- A sheet collecting, and folding mechanism lllClLldlIlgf-in comb nation" a; Inultmvey collecting-cylinder, a 'rotary folding device clnounted; 011 the collecting cylinder; folding i 1y efiecting rotary movement at one .or more .points,;in.

off rollers, andfmeans for. alternet the path of the folding device to etfect collooting or non-collecting operation; I

one of which is displaceable forefi'ecting elternatively regulablerotery moveinentof the ioldin 1 12. f A 7 sheet collecting folding inechzie nisin including in v combination afinulti-vvay collecting cylinder, I n rotary foldingdevice mounted on the collecting cylinder, foldingoff' rollers, and rotary v means for alternatively effecting, rotary movement I of each folding device atoneor norie points in the path ofthe folding device to effect 1 collectingforgnon I collecting operation v lding device hevinge folding blade-mounted on said cyl- 'incler, folding- 05f rollers, and epair ofn'ieens 1 3, VA; Sheet collect ng end folding incohenitin including in combination a mnlti-Way 7 device -to. iefiecti collecting orgnoricollectingioperationi 1 mounted on the collectingcyhnder, foldingofl' rollers, a plurality of devices for s'elec revolution of' rthe-inultiway cylinder, and

other rotary means optionally operableto effect collecting or non-collecting operation. a 14. A sheet-collecting and folding mechanism including-in combination a multi-Way collecting cylinder, a rotary folding device mounted on the collecting cylinder, foldingolf rollers, a plurality of devices for imparting rotary movement-to the folding device at I different points in its rotation, and means for selectively operat ng said devices to effect collecting or non-collecting action.

7 l5. Asheet collecting and folding mecha- 111313 including 111- combination a multi-Way collecting cylinden'a rotary folding device vice in passingthe folding-off rollers and a or second actuating device at another. point in :the cam track alternatively settable to effect collecting or non-collecting operation.

17. A sheet collecting and folding mechanisin including in combination a multiway 3.; collecting cylinder, a rotary foldmg dEVlCB mounted on the collecting cylinder, foldingoif rollers, a circular cam track controlling the movement ofthe folding device, an actuating device at the folding-off rollers for A .2:; effecting rotary movement of the folding device in passing the'folding-off rollers and a second device havinga section of the cam track andkan-actuating mechanism alternatively movable into coaction with the folding device to effect collecting or non-collecting operationt v 18. A sheet cutting, collecting and folding mechanism including in combination a multi-ivay collecting cylinder, a cutting cylinder contacting and cooperating with said I 'collecting cylinder to cut sheetsfrom a web, a folding device "mounted on saidcylinder,

folding-(5E rollers, and means for causing thefoldingdevice to coact with the folding-off rollers on every passing of the folding-off rollers or onlyon a plurality of said passings. 19.,A sheet cutting, collecting and folding mechanism including in combination a multi-Way collectingcylinder, a cutting cylin- 'derfcontacting and cooperating with said.

collecting cylinder to cut sheets from a Web, a rotary folding device having a folding blade mounted on said cylinder, folding-off rollers, and means for causing the folding i "device tocoactwith the folding-off rollers on every passing of the folding-0E rollers or' only on a plurality of said passings.

:20. A sheet cutting, collecting and folding mechanism including in combination a multi way collecting cylinder, a cutting cylinder adjacent to and cooperating with saidcollecting cylinder to cut sheets from a web, a

. rotary folding device having a folding blade mounted onsaid, cylinder, folding-off rollers, and meansfor causing the folding device-to coact with the fold ng-off rollers on every passing of the folding-off rollers or only on 'apluralityof said passings, said means including a control mechanism forthe folding deviceselectively movable into different positionsto cause collecting ornon-collecting operation.

- 21 A sheet cutting, collecting and folding mechanism including in comb1nat1on a multi-Way, collecting cylinder, a rotary folding device'inounted on the collecting cylinder, a cutting cylinder cooperating With said collectingcylinder to cut sheets from a Web, folding-0E rollers, and means for elfecting alternatively regulable rotar movement of the folding device to effect co lecting or noncollecting operation.

' 22. A sheet cutting, collecting and folding mechanism including in combination a multi- Way collecting cylinder, a rotaryfolding device mounted on the collecting cylinder, a cutting'cylindercooperating with said col- .lecting cylinder to out sheets from 'a Web,

folding-oil rollers, a plurality of devices for imparting rotary movement to the folding device at different points in its rotation, and means for selectively operating said devices to efiect collecting-or non-collecting action.

28. A sheet collecting and folding mechanism including in combination a multi-Way collecting cylinder, sheet holding and releasing means on the collecting cylinder, and devices for caus ng said means torelease the sheets on every revolution or on a plurality of revolutions of the collecting cylinder, a rotary folding device having a folding blade mounted on said cylinder, folding-off rollers.

and means for causing the folding device to coact with the folding-off rollers on every passing of the folding-off rollersor'onlyon a plurality of said passings, said means including a control mechanism for the folding device selectively movable into different positionsto' cause collecting or non-collecting operation.

24; A sheet collecting and folding mechanism including in combination a multi-vway collecting cylinder, a rotary folding device mounted on the collecting cylinder, sheet holding and releasing means on the collecting cylinder, and devices for causing said means to release the sheets on every revolution or on a plurality of revolutions of the collecting cylinder, folding-off rollers, and

'means for effecting alternatively regulable i. 526; FA heet colleoting'and folding' mecha- I j rotary mo ement-bi the folding device to T: '1 efieot. oolleotingi or 'non-ollectingoperation. 25; A sheet collecting and folding mecha= I Lnisrn' ,incliic1ing in combination. a cylinder havingaplurali'ty' ofsheet'icollecting spaoesy V thereon, folding; devices looatecl medianly of. fthe;oolleotingvspaces, sheet cutting: devices at I "theends' ofsaid collectingspaces, a cutting K cylinder cooperatingivvith'said sheet'cutting f V "devices,folding-ofi jqllers, and means for causing the folding'clevices'alternatively to' \ooact'withjthe",foliling ofi rollerson every "passingffofjthe'foldingfofirollers or .fon: a

*pln'rality ofsaiclpassingsiji' 7 nism' including-in combinationiacylinder having a plurality of sheet oolleoting spaces 3 f thereon, 1 folding devices looated' nieclianly V ofithe c olleotihg"spaoes fsheet iouttingfdevioes at' the' endsof said collecting" spaces, a- 7 cutting"cylinderplocated substantially horia "zonta'lly with respectlto the "collecting o'ylin-, v

'der and oooperating ith "saidsh'eet cutting devices, folding-oil rollers, and means for -3 causingthefoldingdevices alternatively to coactfwith the folding-oil rollers on every I passing ofthe folding-oil rollers or; on a pluralityof said passings. r 1. I V 'i '27; In a; sheet folding mechanisnna col-fl- :sn le'cting cylinder, sheet holding and releasing means thereon, an' endles cam track therefor, fancl means for optionallyimpartingrotaj'tiona'l movement to said cam track to cause I rsaid'sheet holding and releasing means to 351* release the sheets on every revolution, or' on fa-plurality of revolutions of the collecting "cylinder; 7 a v :28; In combination,ffoldingwfi" roller's,' 'a fsheet collectihghylirider having an uneven t number of sheet collecting surfaces thereon,

a a rotary foldin deviceliaving two opposite '13 positioned- -folding'lolaoles,renal-bladegat least being reinovable,and rn'eans'fqractmtf r "ing the folding 'devioefieveryr'tinie it'passes' "th folrling eoffjrollers. 'ff 29.?1, Combination,"foldingofi" rollers, a sheet collecting cylinder having' an uneven Qmin berorsheet-Collecting surfaces thereon, v a' fotaryfolding clevice havingtwo opposite 'positioned Vfoldii1gbla(1es,' one, blade at le tSheingremovable,*means;for actuating lithe folding devigeevery time fitlpassesthe 1 a V 'folcling ofi'rollers, and'means"foractuating' the foldingfdeviceat; an intermediatepoint v V v a the rotation of the collecting oylinder'. In testimony whereof, I have si ner-my jn'ame'to thiSiSPcification;1"T .7 

